20824282 has 4 divisors (see below), whose sum is σ = 31236426. Its totient is φ = 10412140.

The previous prime is 20824273. The next prime is 20824301. The reversal of 20824282 is 28242802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16248961 + 4575321 = 4031^2 + 2139^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20824282.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5206069 + ... + 5206072.

Almost surely, 2^20824282 is an apocalyptic number.

20824282 is a deficient number, since it is larger than the sum of its proper divisors (10412144).

20824282 is a wasteful number, since it uses less digits than its factorization.

20824282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10412143.

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 20824282 is about 4563.3630142692. The cubic root of 20824282 is about 275.1207491766.

The spelling of 20824282 in words is "twenty million, eight hundred twenty-four thousand, two hundred eighty-two".